Will she drink formula? My DS1 has ASD (autism) and for a ling time there were only a few things that he would eat, but he loved his milk drinks so I switched him to formula so he was still getting the nutrition he needed. When we saw the paediatrician she was very pleased he was healthy in spite of his food refusal.

Hugs to you, I know it's not easy watching someone you love go through stuff like this.